Characterization of action-payment versus result-based-payment choices

Characterize why the learned carbon-farming contracts favor action-based payments over result-based payments, including whether this preference is caused by the greater ability to target specific farming practices.

Background

The hybrid contract in the paper combines per-practice action payments with result-based payments tied to realized carbon sequestration. Across the ablation experiments, the learned contracts favor action payments over result-based payments as a fraction of revenue. The paper suggests that action payments may give the aggregator greater freedom to incentivize specific practices, but it does not establish the mechanism responsible for the observed payment structure.

The open problem is to derive an exact characterization of the conditions under which action-based incentives dominate result-based incentives in this dynamic principal-agent setting with moral hazard, adverse selection, stochastic carbon outcomes, and soil-carbon saturation.